C-ring clinching tool



Jan. 17, 1961 Filed April 11, 1957 K. YANKEE 2,968,042

C-RING CLINCHING TOOL 2 Sheets-Sheet 1 INVENTOR,

BY @Qn-1I,

Jan. 17, 1961 D K YANKEE 2,968,042.

v C-RING CLINCHING TOOL Filed April l1, 1957 2 Sheets-Sheet 2 INVENTOR.

Zzgr "ze, Danna YAN EE @6mm L.

,2,963,042 C-RmG-cLrNcrIINGzrooL 12 claims. (C1. 171er) `This inventionrelates to a power actua-ted C-ring clinching tool, and moreparticularly to a tool which will present an ,open ring Ato an articleto be fastened thereby and lbend the ring arms into a closed position.

` This case relates `to a tool of the general type of that 'shown andclaimed'in the prior application of Albrecht .and Yankee, Serial#641,878, tiled February 25, 1957, lnow yPatent No. 2,921,315. m .Onefeature of the present invention relates to a tool construction whichprovides for feeding a ring from a lmagazine through a pusher slidewayto a pair of angu- Slarly arranged clinching jaws where the ring lies atan angle to the vcenter line ofl the tool body but remains `in4 .the.plane of the slideway, so .that the ring "may be .readilyapplied intocorners or other'dicultly `accessible locations.

4A-further object of lthe yinvention pertains to present- `ing' the.ring to ,the angularly positioned' clinching -jaws '.n such a mannerthat the ring is lheldunder'a resilient .pressure and in la jaw pocketsoarranged that the 'ring .is Llirmly positioned for introduction to awork piece -bu'tlthe .ring ,arms `are not distorted prior '.to theclinch- ;mg operation.

Another object is to provide a construction whereby the rings maybe fedserially .to the pusher slideway from a supply magazine, comprising afeed .trougharranged parallel with thetool body, and then be moved in an.arcuatevpath into the clinch jaws.

.A further 4Objectis to ,provide a `power operated cam `mechanismarranged to close the jaws positively and in- .cluding a resiliently.operating device which yieldingly yurges the jaws into a clampingengagement with the ring whenpresented `by the pusher `so as .to holdthering tirmly in position for the clinching operation.

Another object is to provide a construction of this type ,whichthecamsmechanism ,comprises Va cam operating .on aforward motion to closethe jawsand a ring pusher whichis .connectedtresiliently to the jaws tourge them yieldingly into a gripping engagement with a .ring l.presentedangularly thereto.

Another .object is to providera construction ofthis type in 4which theforwardly moved cam arranged to closer-the angularly `arranged jaws isconnected through .amechanical device to move the ring pusher sliderearyvardlywhen the jaws are closed and to, move thatslidepositively/'..forward to-feed. aringtothe jaws when Athe jaw`los'ingslide moves, rearwardly.

y. Aftirtlierobjectis to provide ,a construction in which the .jaw`operated mechanism is positively .moved .by .inreansof a pneumaticallyloperated piston, and wherein thepiston Vcrhaxnberis 4pivotallymountedon the vtool body in. such. a, .manner that the handle carryingthe toolwill .remain in a downward V,position irrespective of the angularposition of the jaws. Other .objects willbe apparent ,in `the following,-disclosure.

-gfmaccordance 4withmy inventionrI have provdeda:126Wfertili-OperatedPreferably nesueetially, whieh saneren a. Bair :of.am ORaeted-fag; dengue ins ice .arranged at an 'angle to the centerline of the tool body. The tool has a ring feed magazine on the toolv.body connected to present a ring to `a feed groove and a pusher slideserves to move the ring alongthe groove'in arcuate path to theangularlyarranged jaws. The'ring's are clinched by va positively movedVcam connected'to close the jaws, and when that cam moves to open thejaws a pusher slide, preferably operating in an arcuate slideway, iispositively movedto feed'lthe ringforward. -That pusher slidey isconnected' througha resilient yield- 'ing `devicewith the jawssothat the'ring'.'is frictionallj7 held by the -jaws prior to `its lbeing bentand' `clinched. The jaws may be held at a desired yangle relative to thevhandle support.1 l *1' Referring vtov the drawings illustrating oneembodiment ofthe invention: 'l'

Fig. .1 lis a vertical and central section through ,the tool;

Pig. .2 is a fragmentary top plan view of the tool `but with the ringfeedmagazine removed;

.Figf 3 is an under side plan View, with parts :broken away to show theoperation `of the device; Fig. 4`is a section on the line 4-4 of Fig. 3;

Fig. 5 is a front elevational view of the jaw end :of :the device; AFig. A6 is a fragmentary section on the line v6---6 of AFU'J; v Y

ig. 7 is an enlarged fragmentary somewhat diagramimatic view ofthe ringfeed Vgrooves .in the jaws and tool body; 'and FigsjS and 9 arediagrammatic views showingth'ej-operation of the endless belt movementof the pusher slide `with'.the pusher in Vits' 'two end positions. The.'C-.ring clinchingtool illustrated-in the drawings'xs a guntype of toolhaving a body comprising ,two 'spaced Y vertical ribs 10 connectedatvthe rear by a vertical -frame portion 11 and at the `front by anarcuate lportion 12. he space betweenjthe ribs 10 is arranged forsliding members which Vfeedv the C-rings C -(FgZ) and operate the jaws.,The body is supported by a gun type of 'handle13. The two'. jawsy14 and`15 'are formed as the fr'o'nt ends of two levers of the first classwhich have rearwardly projecting portions 16 and ;17 and c entraldisc-shapedpor- .tions 18 and19 shaped as thin plates. ,These plates'are `pivotally mounted on Va pivot pin 20 .(Eig. vl.) having a`head.ZLInOimtedin a recess in-thevfront'pbrtionl2 ofzthe Vbody andprojecting downwardly through a hole."'1`he pinisheld in place below the,discs 18 and. 19 by means ofvalnut ,2,2engagingthe under plate19.`

The .jawsj14 and 15are shaped to hold a l( -ring therebetween, and theyjare separately movable by camrnern- .bers which causethegjaws tomovetoward'each ither. and

closethe ring. 'lo eiect this closing movemenntherear ends of the jawlevers 16 and 17 are" each provided 'with offset cam .followers 24shaped as Nparallel cylindrical pins. These pins'ride -incam slots 26 ina slide plate 2 8, which is slidably Vmounted within slots.29 intheisidewllsl@ {ofthe body and moved by Va pneumatic v,piston or bye. solenoid,vif desired. The camplate 28 has' parallel nppperpgand lower AfacesVzind'paralleljsides which-provide .for this sliding,movement` L Asecond cam plateltlv is mounted within .a1 longitudinallrecess on theunder side ofthe cam i.plate;2 8; as shown inFig. '4. AThis lower carnplate lillis held yin.therecess `ofthe supper. plate by. means of aU-shaped retainingplate ,.32.' Thisnplate is cut out, as shown LiniFig.3,*to'provide space for lthe operating parts. The platerismheld'in place...by means of .'suitablyjaiixed jcap screwsandvsuitably ,.Pvsitienedeewelst- .Thetlowr camrlate has-a' V1105?.Iwftifm,PfF/fiil with dverginsCam vfatwsi 4which are yalso arranged to engagefthe leve'rlpins-gt. 111e@am slots'26 inthe slide plate 28 diverge rearwardly'tofgthe tool andare so arranged that their inner faces engage the pins 24 when the camplate 28 is moved forward towards the right and thus cause the pins 24to separate and move the jaws 14 and 15 toward each other. This cammovement closes the C ring. When the plate 28 is moved rearwardly, theouter walls of the cam slots cause the jaws to separate. The cam faces35 of the lower plate 30 extend in the opposite direction, so that whenthe slide plate 30 moves rearwardly, these cam faces likewise tend toseparate the pins 24 and urge the jaws toward each other.

A primary feature of this construction is a modification of theconstruction shown in said prior application. In the present case, thejaws are closed by the positive cam action of the pins 24 riding on theinner surfaces of the cam slots 26 when the cam plate 28 is forcedforward toward the jaws. The lower slide plate 30 is L-shaped and hasits forward dove-tailed cam nose 35 resiliently urged rearwardly towardsthe left in Fig. 3 by a spring 38 mounted between the head 39 of a rod40 and a lug 42 projecting downwardly from the rear of the under plate30. This spring is of sucient strength and is maintained undecompression so that it at all times tends to urge the lower plate 30rearwardly and cause its diverging cam faces 35 to urge the lever pins24 away from each other and thus provide a resilient pressure on aC-ring while it is being introduced into or is frictionally held betweenthe spaced jaws 14 and 15, as explained below. The retainer plate 32 iscut out at 43, as shown in Fig. 3, to provide space for movement of thecam plate lug 42 without interference.

Another feature of this invention pertains to having the jaws 14 and 15extend obliquely relative to the longitudinal center line of the toolbody, as best shown in the top plan view of Fig. 2 and the under sideview of Fig. 3. These jaws are so positioned that the C-ring mountedtherebetween has its central plane remaining a1- ways in the plane ofits movement through a feed channel in the jaw supporting body. Asshown, the C-ring is moved forward longitudinally of the tool body andthen carried around a curved channel in such a manner that the ring hasits arms projecting obliquely and upwardly (Fig. 2) at an angle of about45 relative to the center line of the body. This oblique positioning ofthe C-ring makes it easy to apply the C-ring to a work piece close to anobstructing ledge or wall.

A major problem involves feeding the C-ring into its obliquely arrangedjaws. For this purpose I provide an arcuate shaped pusher slide 45mounted to ride in inwardly facing correspondingly shaped slideways 46in the body portion 12 (Figs. 1, 2 and 6). The pusher 45 and itsmounting slots are so shaped that the pusher may be moved readily alongits arcuate path to move the C-ring into the jaws 14 and 15. Theslideways 46 are formed by milling upstanding rib portions of the frame12 to provide concentric grooves, and the pusher 45 has its sides shapedto interiit with the slideways.

The arcuate pusher plate 45 is moved by a mechanical connection with theupper slide plate 28 and so arranged that when the cam plate is movedrearwardly to open the jaws, the pusher plate 45 is moved forward tofeed a ring into the jaws. A suitable connection between the cam plate28 and the pusher plate 45, as shown in Figs. 2 and 6, comprises anendless belt 47 connected at one point to a round stud 48 extendingdownwardly through a slot 49 in the body 12 and secured to the C-ringpusher 45 by means of a guide pin 50. The pin 50 has a reduced portionpassing through a washer 51 and is threaded into the reduced portion ofthe stud 48. The washer slides in parallel guideways 52 in the bodyportion 12. The guideway 52, as shown in Fig. 2, is straight. The pusher45 has an elongated transverse slot 53 through which the top of the stud50 projects. Thus, as the slide 45 moves in its arcuate path, the studmay move transversely of the slot 53.

To cause movement of the C-ring pusher slide 45, the stud 48 is slottedat 55 and has the endless belt 47 secured in the slot by means of a setscrew 57. This endless belt passes around three pulleys 58 (Fig. 2)suitably mounted on pivot pins carried by the body of the tool. The beltis connected to the upper slide plate 28 by means of an L-shaped block60 (Fig. 1) which is secured as by cap screws 61 to the plate. As shownin Fig. 4, the belt 47 is mounted in a slot within the upstandingportion of that L-shaped member 60 and is held in place by means of twoset screws 63. When the slide 28 moves forward, the block 60 and theattached belt 47 move together. The belt is preferably made as a flatband of rubberized canvas, but may be made of other suitable material.The rearward movement of the block 60 on the slide plate 28 draws backon the endless belt, and because the opposite run of the belt isfastened to the stud pin 48 of the C-ring pusher plate 45, the latter isforced to move forward in its arcuate slot.

A supply of C-rings is provided by a substantially U-shaped trough orguide 65 within which the C-rings are fed (Fig. l). One end of the guideis fastened to a plate 66 (Fig. 2) suitably connected by screws to thebody 12. The C-rings are urged towards the tool jaws by means of ahighly elastic rubber cord 68 suitably secured at one end to a fixedportion of the guide body 65. The other end of the rubber band isconnected to an L-shaped slide plate 71 which has a suitable handle 72attached thereto. This handle serves for drawing back on the plate 71 toprovide for introducing a new supply of C-rings. The slide plate 71moves within the guide trough and has the handle 72 slidable between thespaced anges of the trough, as is indicated in Fig. 5. Tne rubber cordhas sutiicient resiliency to force the C-rings along the guide troughand around the bend and then through the forwardly extending opening inthe plate 66 and into position for being forced toward the jaws. Thus,one ring at a time is positioned ahead of the pusher plate 45 after thelatter has been drawn to its rearmost position. When the cam plate 28moves rearwardly, the plate 45 picks off the lower ring in thedownwardly extending portion of the trough 65 and moves it forwardtoward the jaws.

The trough 65 is further supported by an intermediate bracket 75(Fig. 1) which is suitably secured by screws to the upstanding crosspiece 11 of the body. The bracket has a hole therethrough so that therubber cord 68 may pass through it. The left hand pulley 58 is shown inFig. 2 as having its pivot post 78 slidably mounted in a longitudinallyelongated slot 79 in a ledge 80 projecting forward from the cross piece11. The pivot post has an enlarged head (Fig. l) at its lower endadapted to be drawn up against the under side of the framework 80 bymeans of an adjustable nut and washer 82. Thus, any slack in the beltmay be readily taken up so as to insure a proper forward motion of theC-ring.

As above indicated, the C-ring is moved under resilient pressure to aposition between the jaws 14 and 15. As best shown in the enlargedfragmentary view of Fig. 7 which shows a C-ring in two positions, thearcuate channels 46 along which the C-rings are fed, after they havebeen picked off from the bottom of the pile in the feed trough, end atan inwardly projecting ledge on each of the jaws. This ledge portionwhich projects inwardly only to a slight extent has a groove or channel86 therein raised above the channel 46 by about the diameter of the wireat each side and serving as the ring guide. When the pusher 45 moves thering 48 forward from its rearward position, each forwardly projectingarm portion of the ring is guided by the projecting nose portion of theledge at the entrance to the short transverse channel 86. A furtherforward motion of the pusher 45 moves the ring into the narrow channels86 of the jaws and forces the jaws to separate as is provided by theresilient action of the spring 38. Each of the jaws is provided 'withinwardly facing pockets :88 which falso have .undercutfsurfaces orgrooves to hold the ring in position. `When the ring is pushed beyondthe outwardly projecting portion 86 of the narrowed part of the jaws, it`is thrust into the grooves of those two pockets and into its iinalposition with its arms projecting forwardly beyond the jaws. The C-ringis frictionally held in position in :the pockets 88 of the jaws 14 and15 by the pressure of the spring 38 acting through the cam faces 35 of`the rlower fslide which thrust the jaw pins 24 outwardly and lthusclamp the jaws yieldingly against the Cring arms. It will be observedthat the rear portions of the `arcuate slots 88 in the jaws provide aseat which prevents any rearward motion of the C-ring when it is thrustunder fforce into a fabric or any other desired position of utility. The.cam plate 28 may be moved forward by a suitable .power .mechanism such4as a solenoid but preferably b y lmeans of the air Vcylinder piston 90,Fig. 1. The piston rod 92 is connected positively to the cam plate 28 sothat the plate yis positively moved thereby. Air is :suitably :admittedto the piston chamber from -a compressed air supply connected to thehollow gun type handle 13. To fcontrol the air, a suitable three wayvalve 96 is provided. This, as illustrated in Fig. l, comprises aplunger 97 lnor,- mally urged toward the right by a spring 98 to closethe air flow to the supply passage 99 which opens at the rear of thevpiston 90. By pushing the thumb button 100 against the spring 98, theplunger 97 is moved rearwardly .and air is admitted to the pistonchamber. When the gbutton 100 is released, air may escapefrom the zrearside .of the piston into the space around the stem of that button. Sinceit is desirable to have the handle 95 always projecting downwardly, Ihave so mounted the operating Aportions yof the tool on the Apiston andhandle part that the tool jaws as well as the vfeed supply of ringsmaybe .rotated relative to the piston and handle. This is provided byhaving the rear wall 11 of the body provided with a cylindrical hole 105(Fig. 1) which is adapted to -slidably it upon a correspondingprojecting boss 106 vformed as a part of the front wall 107 of thepiston chamber. The wall 11 has a hole therein within which a screw 109is threaded. Beneath this screw is a spring pressing against a ball 112which is arranged to be positioned in any one of a set of spacedrecesses in the boss .106. VThus these parts are so arranged that thejaw portion of the tool and the O-ring carrier may be rotated .throughany angle as provided by the ballseats, subject of course to the feedtrough striking the side of the handle. This provides for an adequaterotation ofthe tool jaws so that they may project upwardly, laterally ordownwardly as desired for any particular operation. A horseshoefshapedresilientlock ring 114 (Fig. 5) is suitably mounted in grooves .intheVeud of the boss to hold the parts together. It will also beappreciated-that the. C-rings are not enclosed to any materialextentduring their transfer from the feed trough to the jaws, so that ifa ring has been damaged or is distorted in shape and jams in the feedgrooves or jaws, it may be readily removed.

rlhe piston 92 is connected to the rod 40 as well as to the main camplate 28 through the L-shape piece 120 (Figs. 1 and 3) fastened to theupper cam plate 28 by screws 121. The piece 120 has a threaded holeconnected to the threaded end of the piston rod 92. The latter is lockedto the place 120 by a set screw 122. The rod 40 is threaded into asocket in the L-piece, so that the rod moves with the upper cam plateand the spring 38 is maintained under substantially the same compressionat all times.

The operation of the device will now be apparent. When air is admittedto the rear of the piston 90, the upper cam plate 28 is moved forwardtowards the right. This cam plate acts through the cam followers in thediverging cam slots 26 to spread the cam followers 24 apart ate slot, sothat its front end is now at the rear of i feed channel through whichthe C-rings are supplied. n'

The two end positions of thefpusher arevdshown in LEiga. 7 and 8. Uponreleasing the valve button 100, the escapes from the rear of the pistonunder the force .ap.- plied by the spring 93 and the cam plate 28 .movesrear,- wardly. This causes the endless belt 47 to V move pusher -plateforward and thrust a G-.ring into ythe As .shown in Fig. 3, the vslots26 in the vpositively moved cam plate 28 terminate at the right in wideparallel portions which provide freedom of motion `for -the vjaw 24 atthis location. The spring 38 acting'betweenAv the plunger head 39 andthe downwardly projecting lug.,4 2 of the lower cam plate 3 0 tends todraw its dovetailed cam 35 rearwardly and thus spread the pins 24apar-tgt? close the jaws slightly. At the same ktime that the pistonspring 93 is moving the upper cam plate rearwardly, .the ring pusher ismoved forward and ultimately pushes a ring into the jaws. 'Ihe rearwardmovement of the upper cam plate operates through the .endless belt 47 tomove the pusher plate 45 forward `in a ltimed relationship 'to feed asingle C-ring into the jaws. Then, asvaboveexplained with reference toFig. 7, vthe C-ring is .forced past the constricted passage formed bythehumps or ledges on the jaws and into the pockets 88 of the jaws., Thehump 85 causes the jaws to separate for lthe purpese, as is permitted bythe resilient action of the spring 38. Further forward movement of thepusher V45sli1'ifs the ring down into its iinal position in the pocketsl8,8 of the jaws where the ring has its arms projecting, as illustrated.That is, the arms of the ring are presented 'tonda workpiece at anoblique angle relative to the longitudinal center line of the tool body.The C-.rng, asabove yindicated, projects at a suitable angle, such as45, `tothe center line of the tool, so that as shown in Fig. '2, one arm`of the C-ring projects outwardly beyond theot'her and the ring may thusbe inserted readily into anobstructed corner position of application.The ,tool may .be used in any desired position for applying the`(.-ring.' i

Various modifications may be made inthe device t9 meet the requirementsof the industry. For example,ithle arcuate slideway may be replaced by astraight one,

.the jaws are not Lto be arranged angularly as vherein 'described. Also,the arcuate slideway may 'be used 'with other constructions, such aswhere Vthe spring V.38 mangi associated parts are omitted and the pusherserves v"to force the ring between rigidly positioned jaws withfa,necessary distortion ofthe ring. Other changes willjble readilyapparent asl falling within the lscopeof .vention.

Irclaim:

I. A AC-ring clinching toolcomprising a bodynafmanua'l-,`

ly controlled reciprocable power operated tool mountedlon the body, apair of jaws movably mounted on the body d which have grooves arrangedfor receiving and holding a U-shaped C-ring with its legs projectingforward at an obtuse angle relative to the longitudinal center line ofthe body and with one leg in advance of the other, a f

magazine for supplying C-rings, means including a'slideway arranged toreceive a ring from the magazine and a pusher operated by said tool andreciprocable in the slideway to feed a C-ring into said angulararrangement in the jaw grooves, the center lines of the slideway and thejaw grooves lying substantially in a plane parallel with the center lineof the body, and means operated by l pusher in said slideway for movinga C-ring in the slideway to the jaws, means for moving the pusher tofeed a ring forward and means acting in timed relation with the pushermovement for causing the jaws to clinch the ring.

3. A C-ring clinching tool comprising a body, means `thereon providing asupply of C-rings, a pair of jaws pivotally mounted on the body andextending obliquely at an angle relative to the body center line, anarcuate ring receiving slideway extending from said supply to the jaws,an arcuate pusher movable in said slideway to push a C-ring to the jaws,a power operated cam plate and cam followers connected with the jaws forclosing the latter when the cam plate is moved forward, and mechanismconnecting the cam plate with the pusher which serves to move the pusherforward to feed a C-ring when the cam plate retreats` to open the jaws.

4. Apparatus according to claim 3 comprising means which yieldinglyurges the jaws into frictional engagement with the C-ring when thelatter is fed thereto.

5. A C-ring clinching tool comprising a body having a C-ring feedingslideway, a pair of jaws pivotally mounted on the body and having C-ringgrooves communicating with said slideway, a power operated cam plate andcam followers connected with the jaws which serve to close the jaws whenthe cam plate is moved forward, a second cam plate having cam surfacesthereon arranged to contact with the followers and urge the jaws towarda closing movement when it is moved in a rearward direction, and meansincluding a spring which resiliently urges the second cam platerearwardly to cause the jaws to close against and frictionally engage aring feed thereto.

6. A tool according to claim 5 in which the second cam plate isconnected to the power operated plate for movement therewith, saidconnection including a part movable with the power moved plate and aspring connecting said part with the second cam plate.

7. A C-ring clinching tool according to claim 5 in which the poweroperated cam plate and the second cam plate have their cam facesdiverging in opposite directions, so that the power operated cam platewill close the jaws when moved in a given direction and the second camplate will tend to close the jaws when moved in an opposite direction.

8. A C-ring clinching tool comprising a body, a pair of jaws pivotallymounted thereon, a movable cam and cam followers connected with the jawswhich serve to close the jaws, a C-ring feed magazine mounted on thetool body, means including a pusher for transferring a C-ring from saidmagazine to the jaws, a pneumatic power tool having a piston chamber, apiston and a piston rod slidably mounted in the chamber, a power controlhandle depending from the chamber, means for mounting said body on thepower tool chamber for rotation about the piston rod axis, resilientlyurged locking means for releasably securing the body and chamber in anyof several relatively adjusted positions, said body and power tool beingrelatively rotatable so that a ring mounted in the jaws may be presentedto a work piece at a desired angle, and means for connecting the pistonrod with the cam and pusher to move the same for any position of theAtool relative to the body.

9. A `C-ring clinching tool comprising a body having a ring transferringslideway, a pair of jaws pivotally mounted on the body which have ringreceiving grooves communicating with said slideway and arranged topresent a ring at an oblique angle to the beginning of said slideway butin substantially the plane thereof, a pusher movable in said slideway,means including a power oper ated cam and cam followers which serve toclose the jaws and clinch the ring and means including an endless beltconnecting said cam with said pusher which is so arranged that when thecam moves forward the pusher moves rear wardly.

l0. A tool according to claim 9 in which the slideway and pusher arearcuate and arranged for presenting a C-ring obliquely relative to thebody center line.

11. A C-ring clinching tool comprising a body having a ring transferringslideway, means including a slide movably mounted in said slideway forfeeding a C-ring forward, a pair of jaws pivotally mounted on the bodywhich have ring receiving grooves communicating with said slideway, thegrooves of said jaws having inwardly projecting portions forming aconstricted passage requiring a slight opening of the jaws when the ringis fed forward and thereafter preventing rearward movement of the ring,and means which resiliently urges the jaws toward each other and permitsa yielding movement of the jaws when the ring is forced through theconstricted passage so that the ring is held without distortion byfrictional engagement within the jaws.

l2. A hog ring clinching tool comprising a frame, a pair of leverspivotally secured to said frame, normally opened clinching jaws formingone end of said levers and angularly disposed with respect to the bodyof said tool, normally closed actuating ends forming the opposite endsof said levers and disposed in parallel relation to the body of saidtool, means operating said levers and secured to said frame andextending between said actuating ends of said levers and opening saidnormally closed actuating ends and closing said normally openedclinching jaw ends, and hog ring pushing means attached to saidoperating means to advance said hog ring between said clinching jaws andclose said hog ring when said tool is operated.

Cote June 13, 1950 Steiner Jan. 17, 1956

